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local sqlite3 = require "rspamd_sqlite3"
local redis = require "rspamd_redis"
local util = require "rspamd_util"
local _ = require "fun"
local function send_redis(server, symbol, tokens)
local ret = true
local conn = redis.connect_sync({
host = server,
})
if not conn then
print('Cannot connect to ' .. server)
return false
end
_.each(function(t)
if not conn:add_cmd('HINCRBY', {symbol .. t[3], t[1], t[2]}) then
ret = false
end
end, tokens)
if ret then
ret = conn:exec()
end
return ret
end
local function convert_learned(cache, target)
local converted = 0
local db = sqlite3.open(cache)
local ret = true
if not db then
print('Cannot open cache database: ' .. cache)
return false
end
db:sql('BEGIN;')
for row in db:rows('SELECT * FROM learns;') do
local is_spam
local digest = tostring(util.encode_base32(row.digest))
if row.flag == '0' then
is_spam = '-1'
else
is_spam = '1'
end
if not redis.make_request_sync({
host = target,
cmd = 'HSET',
args = {'learned_ids', digest, is_spam}
}) then
print('Cannot add hash: ' .. digest)
ret = false
else
converted = converted + 1
end
end
db:sql('COMMIT;')
print(string.format('Converted %d cached items from sqlite3 learned cache to redis',
converted))
return ret
end
return function (args, res)
local db = sqlite3.open(res['source_db'])
local tokens = {}
local num = 0
local total = 0
local nusers = 0
local lim = 1000 -- Update each 1000 tokens
local users_map = {}
local learns = {}
if res['cache_db'] then
if not convert_learned(res['cache_db'], res['redis_host']) then
print('Cannot convert learned cache to redis')
return
end
end
if not db then
print('Cannot open source db: ' .. res['source_db'])
return
end
db:sql('BEGIN;')
-- Fill users mapping
for row in db:rows('SELECT * FROM users;') do
if row.id == '0' then
users_map[row.id] = ''
else
users_map[row.id] = row.name
end
learns[row.id] = row.learned
nusers = nusers + 1
end
-- Fill tokens, sending data to redis each `lim` records
for row in db:rows('SELECT token,value,user FROM tokens;') do
local user = ''
if row.user ~= 0 and users_map[row.user] then
user = users_map[row.user]
end
table.insert(tokens, {row.token, row.value, user})
num = num + 1
total = total + 1
if num > lim then
if not send_redis(res['redis_host'], res['symbol'], tokens, users_map) then
print('Cannot send tokens to the redis server')
return
end
num = 0
tokens = {}
end
end
if #tokens > 0 and
not send_redis(res['redis_host'], res['symbol'], tokens, users_map) then
print('Cannot send tokens to the redis server')
return
end
-- Now update all users
_.each(function(id, learned)
local user = users_map[id]
if not redis.make_request_sync({
host = server,
cmd = 'HSET',
args = {symbol .. user, 'learns', learned}
}) then
print('Cannot update learns for user: ' .. user)
end
end, learns)
db:sql('COMMIT;')
print(string.format('Migrated %d tokens for %d users for symbol %s',
total, nusers, res['symbol']))
end
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